Excite your students with this affordable blue-violet laser pointer.

• Maximum power: <5 mW (class 3R/IIIa)
• Approximate wavelength: 405 nm
• Comes with instructions and 2 AA batteries in a reusable gift box

Violet laser pointers are a bit unusual, so they have that wow-factor for the students. While this is still a class IIIa laser, it appears to be slightly less bright than a green laser pointer. This laser is perfect for wavelength comparisons in diffraction experiments.